w3.org

Cascading Style Sheets home page

What is CSS?

Cascading Style Sheets (CSS) is a core language of the open web platform, and is used for adding style (e.g., fonts, colors, spacing) to Web documents.

These pages contain information on how to learn and use CSS and on available software. They also contain news from the CSS working group.

Stan­dards & drafts (Also available as Atom news feed.)

Some of the specifications and drafts by the CSS Working Group:

Com­pleted work Sta­tus Up­com­ing Notes ℹ⃝
CSS Snapshot 2026 NOTE Latest stable CSS 🛈
CSS Snapshot 2025 NOTE 🛈
CSS Snapshot 2024 NOTE 🛈
CSS Snapshot 2023 NOTE 🛈
CSS Snapshot 2022 NOTE 🛈
CSS Snapshot 2021 NOTE 🛈
CSS Snapshot 2020 NOTE 🛈
CSS Snapshot 2018 NOTE 🛈
CSS Snapshot 2017 NOTE 🛈
CSS Snapshot 2015 NOTE 🛈
CSS Snapshot 2010 NOTE 🛈
CSS Snapshot 2007 NOTE 🛈
CSS Color Level 3 REC REC 🛈
CSS Namespaces REC REC 🛈
Selectors Level 3 REC REC 🛈
CSS Level 2 Revision 1 REC REC See Errata 🛈
Media Queries Level 3 REC REC 🛈
CSS Style Attributes REC REC 🛈
CSS Cascading and Inheritance Level 3 REC REC 🛈
CSS Fonts Level 3 REC REC 🛈
CSS Writing Modes Level 3 REC REC 🛈
CSS Basic User Interface Level 3 REC REC 🛈
CSS Box Model Level 3 REC REC 🛈
CSS Containment Level 1 REC REC 🛈
Sta­ble drafts Sta­tus Up­com­ing Notes ℹ⃝
CSS Backgrounds and Borders Level 3 CRD CR 🛈
CSS Conditional Rules Level 3 CR CR 🛈
CSS Multi-column Layout Level 1 CR PR 🛈
CSS Values and Units Level 3 CR PR 🛈
CSS Flexible Box Layout Level 1 CR PR 🛈
CSS Counter Styles Level 3 CR PR 🛈

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Soft­ware (Also available as Atom news feed.)

Nearly all browsers nowadays support CSS and many other applications do, too. To write CSS, you don't need more than a text editor, but there are many tools available that make it even easier.

Of course, all software has bugs, even after several updates. And some programs are further ahead implementing the latest CSS modules than others. Various sites describe bugs and work-arounds.

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A song

[Still from the song's video with the text ‘watch out!!’]

CSS inspired ‘quayjn’ to write the song ‘CSS is OK’.

Read the original on w3.org ↗